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EP 4 263 699 A1

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(43) Date of publication: 25.10.2023 Bulletin 2023/43 (21) Application number: 20965564.6 (22) Date of filing: 17.12.2020

(51) International Patent Classification (IPC):  C08L 23/04(2006.01) H01L 31/048(2014.01) (52) Cooperative Patent Classification (CPC): Y02E 10/50; C08L 23/0815; H01L 31/0481   C-Sets: C08L 23/0815, C08L 51/00; (86) International application number: PCT/CN2020/137367 (87) International publication number: WO 2022/126548 (23.06.2022 Gazette 2022/25)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (71) Applicant: Dow Global Technologies LLC Midland, MI 48674 (US)	(72) Inventors: ZHANG, Wenxin Shanghai 201203 (CN) SUN, Yabin Shanghai 201203 (CN) YANG, Yunfeng Shanghai 201203 (CN) LI, Yuyan Shanghai 201203 (CN) (74) Representative: Boult Wade Tennant LLP  Salisbury Square House 8 Salisbury Square London EC4Y 8AP London EC4Y 8AP (GB)